Window treatment support device



FIG. 1 is a front plan view of a window treatment support device showingour new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top elevational view thereof;

FIG. 4 is a bottom elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a right-side elevational view thereof; and,

FIG. 7 is a front elevational view thereof.

The ornamental design for a window treatment support device, as shownand described.